CVE-2026-80519: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-4qjp-chcx-vxh6
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CVSS 9.8
Published
Advisory Summary

CVE-2026-80519 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80519 at a Glance

CVE Identifier CVE-2026-80519
GHSA Identifier GHSA-4qjp-chcx-vxh6
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-80519

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-80519, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration and module removal make progress. Do not release that peer reference before the callback has finished its own cleanup. If ovpn_crypto_key_slot_put runs after ovpn_peer_put, it can schedule an RCU callback backed by module text after ovpn_cleanup rcu_barrier has already run. The TX error path also freed the remaining skb after ovpn_peer_put, leaving callback cleanup outside the peer/netdev lifetime window. Release the key slot and free any remaining skb first, then drop the peer reference as the last callback action.

References

NVD — CVE-2026-80519 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80519
git.kernel.org/stable/c/4b0de8be28... WEB
https://git.kernel.org/stable/c/4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517
git.kernel.org/stable/c/9e163917a8... WEB
https://git.kernel.org/stable/c/9e163917a86c6adfbe150e13f4c73653a54616de
git.kernel.org/stable/c/a3a676495c... WEB
https://git.kernel.org/stable/c/a3a676495c6419e0cca04d6a67227604e92a3d5a

Frequently Asked Questions

What is CVE-2026-80519?
CVE-2026-80519 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-80519?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80519?
CVE-2026-80519 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-80519?
CVE-2026-80519 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80519?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4qjp-chcx-vxh6",
  "modified" : "2026-08-27T06:31:31Z",
  "published" : "2026-08-27T06:31:31Z",
  "aliases" : [ "CVE-2026-80519" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\novpn: finish crypto callback cleanup before peer release\n\nCrypto completion callbacks hold both key-slot and peer references. The\npeer reference pins the netdev, and dropping the last peer reference can\nlet netdev unregistration and module removal make progress.\n\nDo not release that peer reference before the callback has finished its\nown cleanup. If ovpn_crypto_key_slot_put runs after ovpn_peer_put, it can\nschedule an RCU callback backed by module text after ovpn_cleanup\nrcu_barrier has already run. The TX error path also freed the remaining\nskb after ovpn_peer_put, leaving callback cleanup outside the peer/netdev\nlifetime window.\n\nRelease the key slot and free any remaining skb first, then drop the peer\nreference as the last callback action.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80519"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9e163917a86c6adfbe150e13f4c73653a54616de"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a3a676495c6419e0cca04d6a67227604e92a3d5a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:17:05Z"
  }
}